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What does the IECC say about ducts in conditioned crawlspaces?

April 26, 2017conditioned crawlspaces ducts iecc

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What does the IECC say about ducts in conditioned crawlspaces?

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• The 2009 IECC ducts or portions of ducts located completely within the building envelope (i.e. conditioned crawl space) are exempt from having to be insulated; however, they still must be sealed properly.